Effect of A-site ordering on IR absorption and magnetotransmission in PrBaMn2O6 double manganite
| Autor: | Elena V. Mostovshchikova, Nikita S. Ermolov, Evgenii V. Sterkhov, S. V. Naumov, S.A. Uporov, Svetlana G. Titova |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Manganite 01 natural sciences Spectral line Electronic Optical and Magnetic Materials Magnetic field Condensed Matter::Materials Science Paramagnetism Delocalized electron Ferromagnetism 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Charge carrier 0210 nano-technology |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 538:168247 |
| ISSN: | 0304-8853 |
| Popis: | For double manganites PrBaMn2O6 with different degree of A-site ordering, magnetic and optical properties in near-IR range were studied. Full ordered manganite is characterized by antiferromagnetic state at low temperatures; magnetic phase transition from antiferromagnetic to ferromagnetic state occurs near TN = 262 K and to paramagnetic state near TC = 305 K. Partially disordered manganite consists of few fractions with different state of A-site ordering and shows the transition from ferromagnetic state to paramagnetic one at 190 K. For disordered manganite weak ferromagnetic contribution is observed below 130 K. The optical density spectra and the temperature dependences of light transmission indicate a change in behavior of the charge carrier system (metal–insulator transition) near the magnetic phase transitions. The magnetotransmission effect was measured for the first time in double manganites PrBaMn2O6. Spectral dependence of magnetotransmission lets associate this effect with an increase in the fraction of delocalized charge carriers when a magnetic field is applied. |
| Databáze: | OpenAIRE |
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